Performance Evaluation and Analysis of Rolechem's New ARC-S27 DTD Derivative Series

Rolechem has launched its new additive, ARC-S27. As a DTD derivative, this product offers exceptional stability, significantly reduces low-temperature cell impedance, and enhances both high- and low-temperature performance, outperforming DTD in all aspects. We welcome industry partners to engage with us for further discussions.

Cell Type: 1Ah pouch cell Chemistry System: LFP / Graphite Voltage Window: 2.5 V – 3.65 V Electrolyte Baseline (Ref): EC : EMC = 3 : 7, 1 M LiPF6, with VC + LiFSI additives Reference Group: 1% DTD Experimental Group: 1% S27

As a DTD derivative, S27 exhibits favorable electrolyte stability, effectively overcoming the drawback of relatively poor electrolyte stability associated with DTD. The low-temperature impedance of S27 is significantly lower than that of DTD, which effectively improves the low-temperature and rate performance of the cells, outperforming DTD. Furthermore, S27 enhances high-temperature performance: under 60°C storage conditions, both the capacity retention and recovery rates of the S27 cell group are comprehensively higher than those of the DTD group, while its high-temperature cycling performance is slightly superior to that of DTD.

In summary, ARC-S27 features excellent stability and can form a high-performance SEI film. It significantly reduces low-temperature cell impedance, enhances low-temperature and rate performance, and improves high-temperature performance, achieving overall performance superior to that of DTD.